JP6698096B2 - Subframe structure with embedded control signaling - Google Patents

Description

CROSS REFERENCE TO RELATED APPLICATIONS This application is provisional patent application No. 62/133,391, filed with the United States Patent and Trademark Office on March 15, 2015, and non-patent filed with the United States Patent and Trademark Office, November 25, 2015. Claims the priority and benefits of Provisional Application No. 14/952,685, the entire content of which is incorporated herein by reference.

  Aspects of the disclosure relate generally to wireless communications, and more particularly to subframe structures with embedded control signaling.

  Wireless communication networks are widely deployed to provide various communication services such as telephony, video, data, messaging, broadcast and the like. Such networks, which are typically multiple access networks, support communication for multiple users by sharing the available network resources. Within such wireless networks, various data services may be provided including voice, video, and email. More recently, wireless communication networks are being used for a wider range of services, including mission critical applications such as telesurgery and remote control applications. In such applications, the relatively short latency allows for reasonably high quality of service. That is, the time for sending information from the communication device and receiving the response at the communication device may need to be relatively short. As the demand for mobile broadband access continues to grow, research and development continues to evolve wireless communication technologies to meet the growing demand for mobile broadband access and improve the overall user experience. There is.

  The following presents a simplified summary of one or more aspects of the present disclosure in order to facilitate a basic understanding of such aspects. This summary is not a comprehensive overview of all contemplated features of the disclosure, and does not identify key or essential elements of all aspects of the disclosure, but rather the scope of any or all aspects of the disclosure. It is not fixed. Its sole purpose is to present some concepts of one or more aspects of the disclosure in a simplified form as a prelude to the more detailed description that is presented later.

  In one aspect, the present disclosure provides a method of wireless communication. This method may be implemented by a scheduling entity. The method may include transmitting, using the air interface, a subframe including a data portion and a control channel at least partially embedded within the data portion. In another aspect, the present disclosure provides an apparatus configured for wireless communication. The apparatus includes a memory, a transceiver, and at least one processor communicatively coupled to the memory and the transceiver. At least one processor and memory may be configured to utilize the air interface to transmit a subframe including a data portion and a control channel at least partially embedded within the data portion. In yet another aspect, the present disclosure provides another apparatus configured for wireless communication. The apparatus may include means for utilizing the air interface to transmit a subframe including a data portion and a control channel at least partially embedded within the data portion. In a further aspect, the present disclosure provides a computer-readable medium storing computer-executable code. The computer-executable code may include instructions configured to utilize the air interface to receive a subframe including a data portion and a control channel at least partially embedded within the data portion.

  In an additional aspect, the present disclosure provides a method of wireless communication. This method may be implemented by a subordinate entity. The method may include utilizing an air interface to receive a subframe including a data portion and a control channel at least partially embedded within the data portion. In another aspect, the present disclosure provides an apparatus configured for wireless communication. The apparatus includes a memory, a transceiver, and at least one processor communicatively coupled to the memory and the transceiver. At least one processor and memory may be configured to utilize the air interface to receive a subframe including a data portion and a control channel at least partially embedded within the data portion. In yet another aspect, the present disclosure provides another apparatus configured for wireless communication. The apparatus may include means for utilizing the air interface to receive a subframe including a data portion and a control channel at least partially embedded within the data portion. In a further aspect, the present disclosure provides a computer-readable medium storing computer-executable code. The computer-executable code may include instructions configured to utilize the air interface to receive a subframe including a data portion and a control channel at least partially embedded within the data portion.

  These and other aspects of the disclosure will be more fully understood upon consideration of the detailed description below. Other aspects, features, and embodiments of the disclosure will be apparent to those of skill in the art upon reviewing the following description of specific exemplary embodiments of the disclosure, in conjunction with the accompanying drawings. Although features of the disclosure may be described with respect to some embodiments and figures below, all embodiments of the disclosure include one or more of the advantageous features described herein. Multiple can be included. In other words, one or more embodiments may be described as having some advantageous features, but one or more of such features are also described herein. It may be used in accordance with various embodiments of the present disclosure. Similarly, although example embodiments may be described below as device, system, or method embodiments, such example embodiments are in various devices, systems, and methods. It should be appreciated that it can be implemented.

FIG. 6 illustrates an example of various communications between a scheduling entity and one or more dependent entities according to aspects of the disclosure. FIG. 6 illustrates an example hardware implementation of a scheduling entity according to aspects of the disclosure. FIG. 6 illustrates an example hardware implementation of a dependent entity according to aspects of the disclosure. FIG. 6 is a diagram of a scheduling entity in communication with a subordinate entity in an access network, according to aspects of the disclosure. FIG. 6 is a diagram illustrating examples of various transmission time intervals (TTIs) according to aspects of the disclosure. FIG. 6 is a diagram illustrating an example of a subframe structure according to one aspect of the present disclosure. FIG. 4 is an example diagram of a multi-user multiple input multiple output (MU-MIMO) transmission according to aspects of the disclosure. FIG. 6 illustrates an example of various methods and/or processes that may be performed by a scheduling entity according to aspects of the disclosure. FIG. 6 illustrates an example of various methods and/or processes that may be performed by a dependent entity in accordance with aspects of the present disclosure.

  The detailed description set forth below with reference to the accompanying drawings is intended as an illustration of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form in order to avoid obscuring such concepts.

  The various concepts presented throughout this disclosure may be implemented across a wide variety of telecommunication systems, network architectures, and communication standards. For example, the 3rd Generation Partnership Project (3GPP) is a standards body that defines several wireless communication standards for networks with Evolved Packet Systems (EPS), sometimes referred to as Long Term Evolution (LTE) networks. .. In LTE networks, each packet may utilize the same or similar latency target. Therefore, the LTE network may provide a generic latency setting. Evolved versions of LTE networks such as fifth generation (5G) networks include, but are not limited to, many different types of services and/or applications (e.g., web browsing, video streaming, VoIP, mission critical applications, multi-hop networks, etc. , Remote control with real-time feedback, remote surgery, etc.). Such services and/or applications may benefit from latency goals that may differ significantly from each other. However, general latency settings in LTE networks can make it difficult to multiplex traffic with different latency targets. Spectral compatibility of systems supporting such diverse latency targets can also be an issue. For example, time multiplexing of normal traffic and short latency traffic (eg, mission critical (MiCr) data) may ignore certain requirements for short latency traffic (eg, MiCr data). Moreover, reserved frequency domain resources for short latency traffic (eg, MiCr data) may limit peak rate and trunking efficiency. Thus, support for multiplexing different types, classes, and categories of traffic and services with significantly different latency characteristics improves such next-generation networks (e.g., 5G networks) and overall user experience. There are cases.

  FIG. 1 is a drawing 100 illustrating an example of various communications between a scheduling entity 102 and one or more dependent entities 104 according to aspects of this disclosure. According to aspects of the disclosure, the term "downlink" (DL) may refer to a point-to-multipoint transmission originating from the scheduling entity 102, and the term "uplink" (UL) refers to a subordinate entity. It may refer to a point-to-point transmission originating from 104. Broadly speaking, the scheduling entity 102 can be a node or device responsible for scheduling traffic in a wireless communication network, including various DL and UL transmissions. Scheduling entity 102 may be referred to as a scheduler and/or any other suitable term without departing from the scope of this disclosure. The scheduling entity 102 is a base station, base transceiver station, radio base station, radio transceiver, transceiver function, basic service set, extended service set, access point, node B, user equipment (UE), mesh node, relay, peer, and /Or may reside in any other suitable device.

  Generally, the subordinate entity 104 is a node or node that receives scheduling methods and/or control information, including scheduling grants, synchronization or timing information, or other control information from another entity in the wireless communication network, such as the scheduling entity 102. Is a device. Dependent entity 104 may be referred to as scheduled and/or in any other suitable term without departing from the scope of this disclosure. The subordinate entity 104 is a UE, mobile phone, smartphone, mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, Access terminal, mobile terminal, wireless terminal, remote terminal, handset, terminal, user agent, mobile client, client, mesh node, peer, session initiation protocol telephone, laptop, notebook, netbook, smartbook, personal digital assistant, Satellite radio, Global Positioning System devices, multimedia devices, video devices, digital audio players, cameras, game consoles, entertainment devices, vehicle components, wearable computing devices (e.g. smart watches, glasses, health or fitness trackers, etc.) , Appliances, sensors, vending machines, and/or any other suitable device.

  As used herein, the "control channel" may be used to convey authorization information. The scheduling entity 102 may send the DL data channel 106 and the DL control channel 108. Subordinate entity 104 may transmit UL data channel 110 and UL control channel 112. The channels shown in FIG. 1 are not necessarily all of the channels that may be utilized by scheduling entity 102 and/or subordinate entity 104. Those skilled in the art may utilize other channels in addition to those shown, such as other data, control, and feedback channels.

  As mentioned above, some data may be considered MiCr data. In some settings, MiCr data refers to data that has relatively short or very short latency requirements. For example, the latency requirements for MiCr data may be shorter than the latency requirements for other data contained in that subframe. Latency generally refers to the delay associated with receiving data at its intended destination. In some configurations, MiCr data refers to data that has relatively high priority requirements. For example, the priority requirements for MiCr data may be higher than the priority requirements for other data contained in a subframe. In general, priority refers to the importance or temporal sensitivity of data. Data with relatively high importance and/or relatively high temporal sensitivity should be received before other data with relatively low importance and/or relatively low temporal sensitivity. In some configurations, MiCr data refers to data that has relatively high reliability requirements. For example, the reliability requirements for MiCr data may be higher than the reliability requirements for other data contained in that subframe. In general, reliability refers to how consistently successfully receiving data without error by its intended destination. When the MiCr data and the nominal data coexist in the same band, the MiCr data is considered to have a TTI (subframe) smaller than the nominal data TTI (subframe). Therefore, from the perspective of the short (MiCr) TTI, the nominal data in each short TTI may have a scheduling corresponding to the beginning of the long TTI following the previous TTI (subframe). When the scheduling needs to be changed due to the existence of MiCr data, the scheduling change information needs to be supplied to the nominal data. Such control/indicator channel information can be embedded within the allocated data resource.

  FIG. 2 is a diagram 200 illustrating an example hardware implementation of scheduling entity 102 in accordance with aspects of the present disclosure. The scheduling entity 102 may include a user interface 212. User interface 212 may be configured to receive one or more inputs from a user of scheduling entity 102. User interface 212 may also be configured to display information to a user of scheduling entity 102. User interface 212 may exchange data via bus interface 208. The scheduling entity 102 may include a transceiver 210. The transceiver 210 may be configured to communicate with another device to receive data and/or transmit data. Transceiver 210 constitutes a means for communicating with another device via a wired and/or wireless transmission medium. The transceiver 210 may utilize the air interface to configure the means for transmitting a subframe including a data portion and a control channel at least partially embedded within the data portion. For example, the control channel may be partially embedded within the data portion or fully embedded within the data portion without departing from the scope of the present disclosure. The phrase "at least partially" refers to a similar phrase (e.g., at least partially, at least partly, and/or at least part) without departing from the scope of the present disclosure. May be included. According to aspects of the present disclosure, the terms "in communication" and/or "in communication" refer to at least one of transmitting or receiving. Those skilled in the art will appreciate that many types of techniques may perform such communication without departing from the scope of this disclosure.

  Scheduling entity 102 may include memory 214, one or more processors 204, computer readable media 206, and bus interface 208. Bus interface 208 may comprise an interface between bus 216 and transceiver 210. The memory 214, the one or more processors 204, the computer-readable medium 206, and the bus interface 208 may be connected to each other via a bus 216. Processor 204 may be communicatively coupled to transceiver 210 and/or memory 214.

  The processor 204 may include a transmitter circuit 220. The transmit circuit 220 utilizes the air interface to implement various hardware components that make up a means for transmitting a subframe including a data portion and a control channel at least partially embedded within the data portion. Various algorithms may be implemented to include and/or constitute such means. The control channel may include one or more pilot tones embedded at least partially within the data portion of the subframe. The control channel may be different from the scheduling information transmitted before transmitting the subframe.

  Device 204 may include override circuit 221. Override circuit 221 may include various hardware components that make up the means for determining the priority of data already scheduled for transmission in subframes, and/or various means that make up such means. Any algorithm may be executed. The override circuit 221 comprises various hardware that constitutes a means for determining whether other data ready to be transmitted has a higher priority than that of the data already scheduled for transmission in the subframe. Ware components may be included and/or various algorithms making up such means may be implemented. The control channel may include an override indicator when other data ready to be transmitted has a higher priority than that of the data already scheduled for transmission in the subframe. In some cases, the override indicator indicates that data already scheduled for transmission in a subframe is overridden by other data having a higher priority than that of data already scheduled for transmission in the subframe. Set as shown. In some other examples, the override indicator is a puncture of the resource element in the data portion of the subframe to include other data that has a higher priority than the priority of the data already scheduled for transmission in the subframe. It is set to indicate charing.

  The processor 204 may include a multi-user multiple input multiple output (MU-MIMO) circuit 222. The MU-MIMO circuit 222 may include and/or various hardware components that make up the means for determining whether a subframe is included in an MU-MIMO transmission. Any algorithm may be executed. The control channel may include a modulation indicator when the subframe is included in an MU-MIMO transmission. The modulation indicator may be set to indicate information corresponding to the modulation of another device (eg, another UE) included in the MU-MIMO transmission.

  The above description shows a non-limiting example of the processor 204 of the scheduling entity 102. Although various circuits 220, 221, 222 have been described above, those skilled in the art will recognize that processor 204 may also include various other circuits 223 that are additions and/or alternatives to the circuits 220, 221, 222 described above. It will be understood that it is good. Such other circuitry 223 may constitute means for performing any one or more of the functions, methods, processes, features and/or aspects described herein.

  Computer readable media 206 may store computer executable code. Computer-executable code may include instructions in accordance with various aspects of the disclosure. Computer-executable code may include instructions configured to perform various functions and/or enable various aspects described herein. Computer-executable instructions may be executed by various hardware components of scheduling entity 102 (eg, processor 204 and/or any of its circuits 220, 221, 222, 223). Computer-executable instructions may be part of various software programs and/or software modules. The computer-executable code may also include transmit instructions 240 configured to utilize the air interface to transmit a subframe including a data portion and a control channel at least partially embedded within the data portion. Good. The control channel may include one or more pilot tones embedded at least partially within the data portion of the subframe. The control channel may be different from the scheduling information transmitted before transmitting the subframe.

  The computer executable code may include override instructions 241. Override instruction 241 may be configured to determine the priority of data already scheduled for transmission in a subframe. The override circuit 241 may be configured to determine whether other data ready to be transmitted has a higher priority than the priority of the data already scheduled for transmission in the subframe. The control channel may include an override indicator when other data ready to be transmitted has a higher priority than that of the data already scheduled for transmission in the subframe. In some cases, the override indicator indicates that data already scheduled for transmission in a subframe is overridden by other data having a higher priority than that of data already scheduled for transmission in the subframe. Set as shown. In some other examples, the override indicator is a resource element within a data portion of a subframe for including other data that has a higher priority than that of the data already scheduled for transmission in the subframe. Set to indicate puncturing.

  Computer-executable code may include MU-MIMO instructions 242. The MU-MIMO instruction 242 may be configured to determine whether a subframe is included in the MU-MIMO transmission. The control channel may include a modulation indicator when the subframe is included in an MU-MIMO transmission. The modulation indicator may be set to indicate information corresponding to the modulation of another device (eg, another UE) included in the MU-MIMO transmission.

  The above description provides a non-limiting example of computer readable media 206 of scheduling entity 102. Although various computer executable instructions 240, 241, 242 have been described above, those skilled in the art will appreciate that computer readable medium 206 is a variety of additions and/or alternatives to the computer executable instructions 240, 241, 242 described above. It will be appreciated that other computer-executable instructions 243 may also be included. Such other computer-executable instructions 243 may be configured for any one or more of the functions, methods, processes, features, and/or aspects described herein.

  The memory 214 may include various memory modules. The memory module may be configured to store and read various values and/or information from either the processor 204 or its circuitry 220, 221, 222, 223. The memory module stores various values and/or information thereon and is readable by the computer-executable code contained in the computer-readable medium 206, or any of its instructions 240, 241, 242, 243. It may be configured. The memory 214 may include priority data 230. The priority data 230 may include information regarding the priority of the data to be transmitted. As explained in detail above, the duration of the TTI may differ based on the priority of the data to be transmitted. For example, TTI may be inversely proportional to the priority of the data transmitted. In some cases, the priority of the data may be related to the quality of service (QoS) of the data. For example, data having a relatively high QoS may have a relatively high priority. Some communication networks (eg, 5G networks) may provide different levels of QoS for different applications. Therefore, a variable TTI configuration may be implemented in some cases, as described in more detail herein.

  The memory 214 may include modulated data 231. The modulation data may include information regarding the modulation order, scheme, and/or setting of one or more subframes included in the MU-MIMO transmission. For example, a stream of MU-MIMO transmissions may include a subframe that includes a control channel with a modulation indicator, which modulation indicator provides information about the modulation order of another stream of MU-MIMO transmissions within the same resource element. You may. Scheduling entity 102 may encode the modulation of such subframes using modulated data 231 before transmitting the MU-MIMO transmission information to subordinate entity 104. While various types of data in memory 214 have been described above, those skilled in the art will appreciate that memory 214 may include various other data that are additions and/or alternatives to data 230, 231 described above. Be understood. Such other data may be associated with any one or more of the features, methods, processes, features, and/or aspects described herein.

  Those skilled in the art will appreciate that the scheduling entity 102 may include alternative and/or additional features without departing from the scope of this disclosure. In accordance with various aspects of the disclosure, an element, or any portion of an element, or any combination of elements may be implemented with a processing system that includes one or more processors 204. Examples of one or more processors 204 include microprocessors, microcontrollers, digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gate logic, discrete hardware circuits. , And other suitable hardware configured to perform the various functions described throughout this disclosure. The processing system may be implemented with a bus architecture represented schematically by bus 216 and bus interface 208. Bus 216 may include any number of interconnecting buses and bridges, depending on the particular application of the processing system and the overall design constraints. Bus 216 may link various circuits together, including one or more processors 204, memory 214, and computer readable media 206. Bus 216 may also link various other circuits well known in the art, such as timing sources, peripherals, voltage regulators, and power management circuits.

  One or more processors 204 are responsible for managing bus 216 and may be responsible for overall processing, including execution of software stored on computer readable media 206. The software, when executed by the one or more processors 204, causes the processing system to perform various functions described below for any one or more devices. Computer readable media 206 may also be used to store data processed by one or more processors 204 when executing software. Software, whether referred to by software, firmware, middleware, microcode, hardware description language, or other name, instructions, instruction sets, codes, code segments, program codes, programs, subprograms, It should be broadly construed to mean software module, application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, and so on. The software may reside on computer readable medium 206.

  Computer readable media 206 can be non-transitory computer readable media. Non-transitory computer-readable media include, by way of example, magnetic storage devices (eg, hard disks, floppy disks, magnetic strips), optical disks (eg, compact discs (CDs) or digital versatile discs (DVDs)), smart cards, flash. Memory device (for example, card, stick, or key drive), random access memory (RAM), read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), Included are registers, removable disks, and any other suitable medium for storing software and/or instructions that may be accessed and read by a computer. Computer readable media 206 may also include, by way of example, carrier waves, transmission lines, and any other suitable medium for transmitting software and/or instructions that may be accessed and read by a computer. Computer readable media 206 may reside within the processing system, external to the processing system, or distributed across multiple entities including the processing system. Computer readable media 206 may be embodied in a computer program product. By way of example, and not limitation, computer program products may comprise computer readable media in packaging materials. Those of ordinary skill in the art will recognize how to optimally implement the above functionality presented throughout this disclosure, depending on the particular application and the overall design constraints imposed on the overall system.

  FIG. 3 is a diagram 300 illustrating an example hardware implementation of a dependent entity 104, according to aspects of this disclosure. The dependent entity 104 may include a user interface 312. User interface 312 may be configured to receive one or more inputs from a user of subordinate entity 104. User interface 312 may also be configured to display information to a user of subordinate entity 104. User interface 312 may exchange data via bus interface 308. The dependent entity 104 may include a transceiver 310. The transceiver 310 may be configured to communicate with another device to receive data and/or transmit data. Transceiver 310 constitutes a means for communicating with another device via a wired transmission medium and/or a wireless transmission medium. The transceiver 310 may utilize the air interface to configure a means for receiving a subframe including a data portion and a control channel at least partially embedded within the data portion. According to aspects of the present disclosure, the terms "in communication" and/or "in communication" refer to at least one of transmitting or receiving. Those skilled in the art will appreciate that many types of techniques may perform such communication without departing from the scope of this disclosure.

  Scheduling entity 104 may include memory 314, one or more processors 304, computer readable media 306, and bus interface 308. Bus interface 308 may comprise an interface between bus 316 and transceiver 310. The memory 314, the one or more processors 304, the computer-readable medium 306, and the bus interface 308 may be connected to each other via a bus 316. Processor 304 may be communicatively coupled to transceiver 310 and/or memory 314.

  The processor 304 may include a receiving circuit 320. The receiver circuit 320 utilizes the air interface to implement various hardware components that constitute a means for receiving a subframe including a data portion and a control channel at least partially embedded within the data portion. Various algorithms may be implemented to include and/or constitute such means. The control channel may include one or more pilot tones embedded at least partially within the data portion of the subframe. The control channel may be different from the scheduling information transmitted before transmitting the subframe.

  Processor 304 may include override circuit 321. The control channel may include an override indicator when other data ready to be transmitted has a higher priority than that of the data already scheduled for transmission in the subframe. In some cases, the override indicator indicates that data already scheduled for transmission in a subframe is overridden by other data having a higher priority than that of data already scheduled for transmission in the subframe. Set as shown. In some other examples, the override indicator is a resource element within a data portion of a subframe for including other data that has a higher priority than that of the data already scheduled for transmission in the subframe. Set to indicate puncturing. The override circuit 321 may include various hardware components that make up the means for determining the priority of data already scheduled for transmission in a subframe, and/or various means that make up such means. Any algorithm may be executed.

  Processor 304 may include demodulation circuit 322. The control channel may include a modulation indicator when the subframe is included in an MU-MIMO transmission. The modulation indicator may be set to indicate information corresponding to the modulation of another device (eg, another UE) included in the MU-MIMO transmission. The demodulation circuit 322 is a hardware component that constitutes a means for co-modulating a subframe of data intended for a device with another device scheduled in the same subframe using the modulation indicator. Various algorithms may be included and/or implement the means.

  The above description shows a non-limiting example of the processor 304 of the dependent entity 104. Although various circuits 320, 321, 322 have been described above, those skilled in the art will recognize that processor 304 may also include various other circuits 323 that are additions and/or alternatives to the circuits 320, 321, 322 described above. It will be understood that it is good. Such other circuitry 323 may constitute a means for performing any one or more of the functions, methods, processes, features, and/or aspects described herein.

  Computer readable media 306 may store computer executable code. Computer-executable code may include instructions in accordance with various aspects of the disclosure. Computer-executable code may include instructions configured to perform various functions and/or enable various aspects described herein. Computer-executable instructions may be executed by various hardware components of subordinate entity 104 (eg, processor 304 and/or any of its circuits 320, 321, 322, 323). Computer-executable instructions may be part of various software programs and/or software modules. The computer-executable code may also include receive instructions 340 configured to utilize the air interface to receive a subframe that includes a data portion and a control channel at least partially embedded within the data portion. Good. The control channel may include one or more pilot tones embedded at least partially within the data portion of the subframe. The control channel may be different from the scheduling information transmitted before transmitting the subframe.

  The computer-executable code may include override instructions 341. The control channel may include an override indicator when other data ready to be transmitted has a higher priority than that of the data already scheduled for transmission in the subframe. In some cases, the override indicator indicates that data already scheduled for transmission in a subframe is overridden by other data having a higher priority than that of data already scheduled for transmission in the subframe. Set as shown. In some other examples, the override indicator is a resource element within a data portion of a subframe for including other data that has a higher priority than that of the data already scheduled for transmission in the subframe. Set to indicate puncturing. Override instruction 341 may be configured to receive other data having a higher priority in place of the already scheduled data.

  Computer-executable code may include demodulation instructions 342. The control channel may include a modulation indicator when the subframe is included in an MU-MIMO transmission. The modulation indicator may be set to indicate information corresponding to the modulation of another device (eg, another UE) included in the MU-MIMO transmission. Demodulation instructions 342 may be configured to demodulate a subframe of data intended for a device in cooperation with other devices scheduled in the same subframe using the modulation indicator.

  The above description provides a non-limiting example of a computer-readable medium 306 for the dependent entity 104. Although various computer-executable instructions 340, 341, 342 have been described above, those skilled in the art will appreciate that computer-readable medium 306 is a variety of additions and/or alternatives to computer-executable instructions 340, 341, 342 described above. It will be appreciated that other computer-executable instructions 343 may also be included. Such other computer-executable instructions 343 may be configured for any one or more of the functions, methods, processes, features, and/or aspects described herein.

  Memory 314 may include various memory modules. The memory module may be configured to store and read various values and/or information from either the processor 304 or its circuitry 320, 321, 322, 323. The memory module also stores various values and/or information that can be read from the computer-executable code included in the computer-readable medium 306 or the execution of any of its instructions 340, 341, 342, 343. Can be configured to. The memory 314 may include priority data 330. The priority data 330 may include information regarding the priority of the data to be transmitted. As explained in detail above, the duration of the TTI may differ based on the priority of the data to be transmitted. For example, TTI may be inversely proportional to the priority of the data transmitted. In some cases, the priority of the data may be related to the QoS of the data. For example, data having a relatively high QoS may have a relatively high priority.

  The memory 314 may include modulated data 331. The modulation data may include information regarding the modulation order, scheme, and/or setting of one or more subframes included in the MU-MIMO transmission. For example, a stream of an MU-MIMO transmission may include a subframe that includes a control channel with a modulation indicator, which modulation indicator presents information about the modulation order of the subframes that are included in another stream of the MU-MIMO transmission. To do. The dependent entity 104 may demodulate such subframes using the modulated data 331 after receiving the MU-MIMO transmission information from the dependent entity 104. Although various types of data in memory 314 have been described above, those skilled in the art will appreciate that memory 314 may include various other data in addition to and/or alternatives to data 330, 331 described above. Be understood. Such other data may be associated with any one or more of the features, methods, processes, features, and/or aspects described herein.

  Those skilled in the art will appreciate that the dependent entity 104 may include alternative and/or additional features without departing from the scope of this disclosure. In accordance with various aspects of the disclosure, an element, or any portion of an element, or any combination of elements may be implemented with a processing system that includes one or more processors 304. Examples of one or more processors 304 include microprocessors, microcontrollers, DSPs, FPGAs, PLDs, state machines, gating logic, discrete hardware circuits, and to implement various functions described throughout this disclosure. Includes any other suitable hardware configured. The processing system may be implemented with a bus architecture represented schematically by bus 316 and bus interface 308. Bus 316 may include any number of interconnecting buses and bridges, depending on the particular application of the processing system and the overall design constraints. Bus 316 may link various circuits together, including one or more processors 304, memory 314, and computer readable media 306. Bus 316 may also link various other circuits well known in the art, such as timing sources, peripherals, voltage regulators, and power management circuits.

  One or more processors 304 may be responsible for managing bus 316 and may be responsible for overall operations including executing software stored on computer readable media 306. The software, when executed by the one or more processors 304, causes the processing system to perform various functions described below for any one or more devices. Computer readable media 306 may also be used to store data manipulated by one or more processors 304 when executing software. Software, whether referred to by software, firmware, middleware, microcode, hardware description language, or any other name, instructions, instruction sets, code, code segments, program code, programs, subprograms, It should be broadly construed to mean software module, application, software application, software package, routine, subroutine, object, executable, thread of execution, procedure, function, and so on. The software may reside on computer readable media 306.

  Computer readable media 306 may be non-transitory computer readable media. Non-transitory computer-readable media include, by way of example, magnetic storage devices (eg, hard disks, floppy disks, magnetic strips), optical disks (eg, CDs or DVDs), smart cards, flash memory devices (eg, cards, sticks, or Key drive), RAM, ROM, PROM, EPROM, EEPROM, registers, removable disks, and any other suitable medium for storing computer-accessible and readable software and/or instructions. Computer readable media 306 may also include, by way of example, carrier waves, transmission lines, and any other suitable medium for transmitting software and/or instructions that may be accessed and read by a computer. Computer readable media 306 may reside within the processing system, external to the processing system, or distributed across multiple entities including the processing system. Computer readable media 306 may be embodied in a computer program product. By way of example, and not limitation, computer program products may comprise computer readable media within packaging materials. Those of ordinary skill in the art will recognize how to optimally implement the above functionality presented throughout this disclosure, depending on the particular application and the overall design constraints imposed on the overall system.

  FIG. 4 is a drawing 400 of a scheduling entity 102 in communication with a subordinate entity 104 in an access network, according to aspects of the disclosure. In DL, upper layer packets from the core network are provided to the controller/processor 475. The controller/processor 475 implements the functionality of the L2 layer. In DL, the controller/processor 475 is responsible for header compression, encryption, packet segmentation and reordering, multiplexing between logical and transport channels, and radio to the subordinate entity 104 based on various priority metrics. Allocate resources. The controller/processor 475 is also responsible for HARQ operations, retransmission of lost packets, signaling to the subordinate entity 104.

  The transmission (TX) processor 416 implements various signal processing functions regarding the L1 layer (that is, the physical layer). Signal processing functions include coding and interleaving as well as various modulation schemes (e.g., 2-phase shift keying (BPSK), 4-phase shift keying (QPSK), M Mapping to signal constellations based on phase shift keying (M-PSK), M quadrature amplitude modulation (M-QAM) is included. The coded and modulated symbols are then split into parallel streams. Each stream is then mapped to orthogonal frequency division multiplexing (OFDM) subcarriers and multiplexed with a reference signal (e.g., pilot) in the time domain and/or frequency domain, then using an inverse fast Fourier transform (IFFT). And combined to generate a physical channel that carries a time domain OFDM symbol stream. The OFDM stream is spatially precoded to generate multiple spatial streams. The channel estimates from channel estimator 474 are used to determine the coding and modulation schemes and may be used for spatial processing. The channel estimate may be derived from the reference signal and/or channel state feedback transmitted by the dependent entity 104. Each spatial stream may then be provided to a different antenna 420 via a separate transmitter 418TX. Each transmitter 418TX may modulate the RF carrier with a respective spatial stream for transmission.

  At the subordinate entity 104, each receiver 454 RX receives a signal via its respective antenna 452. Each receiver 454 RX recovers the information being modulated onto the RF carrier and provides that information to the receive (RX) processor 456. The RX processor 456 performs various signal processing functions of the L1 layer. RX processor 456 may perform spatial processing on the information to recover any spatial stream destined for dependent entity 104. If multiple spatial streams are destined for a dependent entity 104, those spatial streams may be combined by RX processor 456 into a single OFDM symbol stream. RX processor 456 then transforms the OFDM symbol stream from the time domain to the frequency domain using a Fast Fourier Transform (FFT). The frequency domain signal comprises a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most probable signal constellation point transmitted by the scheduling entity 102. These soft decisions may be based on the channel estimates calculated by channel estimator 458. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted by scheduling entity 102 on the physical channel. The data and control signals are then provided to controller/processor 459.

  The controller/processor 459 implements the L2 layer. The controller/processor may be associated with memory 460 that stores program code and data. Memory 460 may be referred to as a computer-readable medium. At UL, the controller/processor 459 performs demultiplexing between transport and logical channels, packet reassembly, decoding, header decompression, and control signal processing to recover upper layer packets from the core network. To do. The upper layer packet is then provided to the data sink 462, which represents all protocol layers above the L2 layer. Various control signals may be provided to the data sink 462 for L3 processing. Controller/processor 459 is also responsible for error detection using acknowledgment (ACK) and/or negative acknowledgment (NACK) protocols to support HARQ operations.

  In UL, data source 467 is used to feed upper layer packets to controller/processor 459. Data source 467 represents all protocol layers above the L2 layer. The controller/processor 459 is responsible for the logical channel and transport based on header compression, encryption, packet segmentation and reordering, and radio resource allocation by the scheduling entity 102, similar to the functions described for DL transmission by the scheduling entity 102. The L2 layer for the user plane and control plane is implemented by multiplexing with the channel. Controller/processor 459 is also responsible for HARQ operations, retransmission of lost packets, signaling to scheduling entity 102.

  The channel estimate derived by the channel estimator 458 from the reference signal or feedback transmitted by the scheduling entity 102 is used by the TX processor 468 to select an appropriate coding and modulation scheme and facilitate spatial processing. May be done. The spatial streams generated by TX processor 468 may be provided to different antennas 452 via separate transmitters 454TX. Each transmitter 454TX may modulate the RF carrier with a respective spatial stream for transmission.

  UL transmissions are processed at scheduling entity 102 in a manner similar to that described for the receiver function at subordinate entity 104. Each receiver 418RX receives a signal through its respective antenna 420. Each receiver 418RX recovers the information modulated on the RF carrier and supplies that information to the RX processor 470. The RX processor 470 may implement the L1 layer.

  The controller/processor 475 implements the L2 layer. The controller/processor 475 can be associated with a memory 476 that stores program code and data. Memory 476 may be referred to as a computer-readable medium. In UL, a controller/processor 475 allows demultiplexing between transport and logical channels, packet reassembly, decryption, header decompression, control to recover upper layer packets from subordinate entity 104. Performs signal processing. Upper layer packets from controller/processor 475 may be provided to the core network. The controller/processor 475 is also responsible for error detection using the ACK and/or NACK protocols to support HARQ operation.

  As used herein, “air interface” refers to the air of an apparatus (eg, scheduling entity 102 and/or subordinate entity 104) for wireless communication that utilizes a method of encoding digital data on multiple carrier frequencies. May refer to interface. In some examples, such an air interface may be an OFDM air interface. Generally, OFDM is a frequency division multiplexing (FDM) scheme that may be used as a digital multi-carrier modulation method. In general, FDM is a technique for dividing the total bandwidth available in a communication medium into a series of non-overlapping frequency subbands, where each subband may be utilized to carry a separate signal. In OFDM, a large number of closely spaced orthogonal subcarrier signals are used to transmit data on several parallel data streams or channels. Each subcarrier may be modulated with a particular modulation order, scheme, and/or setting, such as quadrature amplitude modulation (QAM) or phase shift keying (PSK). The OFDM air interface may be introduced in numerous communication systems such as broadband digital communication, wireless networks, mobile communications, digital subscriber lines (DSL), internet access, and so on. Although various examples of OFDM air interfaces are presented herein, one of ordinary skill in the art will appreciate that any air interface described herein may be implemented or introduced in various other techniques without departing from the scope of the disclosure. It will be appreciated that this may be done. In some cases, the air interface may be a single carrier frequency division multiple access (SC-FDMA) air interface. In some cases, the air interface may be a code division multiple access (CDMA) air interface.

  FIG. 5 is a diagram 500 illustrating examples of various transmission time intervals (TTIs) according to aspects of this disclosure. Generally, TTI refers to a parameter related to encapsulating data from higher layers into each frame for transmission on the radio link layer. TTI may refer to the duration of transmission on the wireless link. The TTI may relate to the size of data blocks passed from the upper network layer to the radio link layer. For example, the data may be divided into blocks at the transmitter, and the length of time required to transmit one (or more) such blocks may determine the TTI.

  The duration of TTI may vary based on one or more factors. In some cases, the TTI duration may be different based on the priority of the data to be transmitted. For example, TTI may be inversely proportional to the priority of the data transmitted. If the transmitted data has a relatively high priority, the TTI may have a relatively short duration. Conversely, if the transmitted data has a relatively low priority, the TTI may have a relatively long duration. Therefore, as shown in FIG. 5, the TTI of MiCr data is transmitted during a TTI shorter than the TTI of other data. In some cases, the priority of the data may be related to the quality of service (QoS) of the data. For example, data having a relatively high QoS may have a relatively high priority. In general, QoS is a qualitative measure of quality of service and may take into account many factors such as error rate, bit rate, throughput, transmission delay, jitter, and various other factors.

  As explained in more detail above, MiCr data refers to data that has relatively short latency requirements or extremely short latency requirements. For example, the latency requirements for MiCr data may be shorter than the latency requirements for other data contained in that subframe. Latency generally refers to the delay associated with receiving data at its intended destination. In some configurations, MiCr data refers to data that has relatively high priority requirements. For example, the priority requirements for MiCr data may be higher than the priority requirements for other data contained in a subframe. In general, priority refers to the importance or temporal sensitivity of data. Data with relatively high importance and/or relatively high temporal sensitivity should be received before other data with relatively low importance and/or relatively low temporal sensitivity. In some settings, MiCr data refers to data that has relatively high reliability requirements. For example, the reliability requirements for MiCr data may be higher than the reliability requirements for other data contained in that subframe. In general, reliability refers to how consistently successfully receiving data without error by its intended destination.

In FIG. 5, various time markers are shown (for reference) as time T ₀ to time T ₁₆ . Long TTIs are shown to have a duration of 1 millisecond (ms). The mid TTI is shown to have a duration of 500 microseconds (μs). Short TTIs are shown to have a duration of 250 μs. The MiCr TTI is shown to have a duration of 125 μs. The TTI duration shown in Figure 5 represents one of many examples. Those skilled in the art will appreciate that any one or more of such durations may be modified based on particular implementations and design constraints without departing from the scope of this disclosure. .. In many systems, the scheduling information is transmitted before the data portion of the subframe is transmitted, and the scheduling information may be configured to schedule data for resource elements in the data portion of the subframe. For example, one of the long TTI shown in Figure 5 ends at time T _8. For the long TTI, scheduling information, (or start time around) in the TTI start time may be transmitted (e.g., in the case of long TTI up to the time T ₀ ~ time T ₈ time T ₀ or the time T ₍ Around ₀ ).

In some cases, an upper layer of scheduling entity 102 (e.g., a medium access control (MAC) layer) may pass some data to a lower layer (with a higher priority than that of other data already scheduled for transmission). For example, it may be supplied to the physical (PHY) layer. For example, the scheduling entity 102 may already be scheduled for transmission during the long TTI from time T ₀ to time T ₈ . However, at some time prior to the end time of the long TTI (e.g., time T ₈ ), the scheduling entity 102 has some data ready to be transmitted already scheduled for transmission during the long TTI. It may be determined that it has a higher priority than the data. For example, the scheduling entity 102, at time T _4, which may receive data that has already higher priority than the priority of the scheduled data for transmission between the long TTI. Since such data has a relatively high priority, the TTI duration for data with that relatively high priority is less than the long TTI duration (eg, 1 ms). If the data with such relatively high priority is MiCr data, the TTI duration for such data may be 125 μs. Such data (e.g., MICR data) data having a relatively higher priority than the data with other (e.g., already scheduled data for transmission between the long TTI to the time T ₀ ~ time T ₈₎ As such, it may be desirable for such data having a relatively high priority to override the transmission of data having a relatively low priority.

However, existing systems do not include a control channel embedded in the data portion of the subframe to convey such override information to the subordinate entity 104. For example, if the data for a short TTI is ready to be sent during the scheduled long TTI, the data for the short TTI takes precedence and overrides the long TTI. Therefore, the scheduled long TTI is temporarily stopped until the transmission of data for the short TTI is completed. Thus, in such existing systems, any information indicating such override, (or start time around) to the start time of the subsequent long TTI (e.g., for long TTI to T ₈ through T ₁₆ Of time T ₈ or around time T ₈ ).

  Compared to such existing systems, various aspects of the present disclosure configure a subframe structure that includes a control channel at least partially embedded within a data portion. Those skilled in the art will appreciate that the term “control channel” (as used herein) encompasses various alternative terms without departing from the scope of this disclosure. Without limitation, such alternative terms include indicator channels, control indicator channels, override indicator channels, optimization indicator channels, puncturing indicator channels, MiCr puncturing indicator channels, and/or various other suitable The term is included. The control channel may be provided via broadcast or unicast (which may require additional channelization of the control channel) without departing from the scope of this disclosure.

  This control channel is different from the scheduling information transmitted before transmitting the subframe. As mentioned above, such scheduling information is configured to schedule data for resource elements in the data portion of the subframe. In some cases, the control channel includes an override indicator when other data ready to be transmitted has a higher priority than that of the data already scheduled for transmission in the subframe. The override indicator is set to indicate that data already scheduled for transmission in a subframe is overridden by other data having a higher priority than that of data already scheduled for transmission in a subframe. To be done.

Therefore, the scheduling entity 102 may convey the above-mentioned override information during transmission (eg, not after transmission) of the long TTI data portion. For example, as can be seen with reference to FIG. 5, scheduling entity 102 determines that time T ₄ (e.g., time T ₀ -hour) rather than time T ₈ (e.g., next TTI start time/next TTI start time) transmission of the data portion of the subframe in the long TTI to T ₈ may transmit such overriding information before) to end. In other words, the override indicator may be presented after a duration that is less than the entire duration of the TTI. For example, as can be seen with reference to FIG. 5, the scheduling entity 102 may present the override indicator after 500 μs, which is shorter than the overall duration of the 1 ms duration of the long TTI.

The subordinate entity 104 may monitor grants at long TTI boundaries and may monitor the above-mentioned control channels at shorter TTI boundaries. For example, as can be seen with reference to the example shown in FIG. 5, the subordinate entity 104 has a time T ₈ (e.g., a long TTI boundary) as well as times T ₁ , T ₂ , T ₃ , T ₄ , T ₅ , T ₆ , T ₆ . Permits may be monitored at T ₇ (eg, MiCr TTI boundaries). Those skilled in the art will appreciate that the shorter TTI need not necessarily be the MiCr TTI. For example, the shorter TTI may be an intermediate TTI and/or a short TTI. As shown in FIG. 5, the intermediate TTI has boundaries at T ₄ , T ₈ , and the short TTI has boundaries at T ₂ , T ₄ , T ₆ , T ₈ .

  In other words, the override indicator may indicate puncturing of resource elements in the data portion of the subframe to include other data having a higher priority than that of the data already scheduled for transmission in the subframe. It may be set. In other words, the override indicator can facilitate puncturing detection. The override indicator may be embedded in each resource subblock (eg, subband). By providing such an indication to the subordinate entity 104, the subordinate entity 104 is informed that resource elements already scheduled for data having a relatively low priority are currently included in a relatively short TTI and have a relatively high priority. You are notified that you have been "removed" or overridden by data that has a degree.

  In some cases, punctured resource elements may be configured to indicate a QoS level and/or TTI duration for data with a relatively high priority. In some cases, puncturing increases the number of resource elements used for the override indicator, thereby increasing the number of resources to improve the reliability with which the override indicator is successfully received and processed by the subordinate entity 104. It may be performed throughout the block. In some cases, resource elements may be converted to pilot tones after QoS level bit payload detection to improve channel estimation.

  FIG. 6 is a drawing 600 illustrating an example of a subframe structure, according to aspects of the disclosure. Those skilled in the art will appreciate that this is a non-limiting example and various other subframe structures may be within the scope of the present disclosure. In some cases, the subframe structure shown in FIG. 6 is a DL subframe structure. The resource grid may be used to represent two time slots, each containing a resource block. The resource grid is divided into a plurality of resource elements. In a normal cyclic prefix, a resource block contains 12 consecutive subcarriers in the frequency domain and 7 consecutive OFDM symbols in the time domain, for a total of 84 resource elements. With the extended cyclic prefix, a resource block includes 12 consecutive subcarriers in the frequency domain and 6 consecutive OFDM symbols in the time domain, for a total of 72 resource elements. Some of the resource elements include DL reference signals. The number of bits transmitted by each resource element may vary depending on the modulation scheme, order, and/or settings implemented by the system.

  In some cases, the control channel (eg, as described above with reference to FIG. 5) may be included in one or more pilot tones that are at least partially embedded in the data portion of the subframe. .. For purposes of illustration, various pilot tones are shown in Figure 6, and these pilot tones are embedded in the data portion of the subframe. As explained in more detail above, these pilot tones have a higher priority than the data already scheduled for transmission in subframes by other data ready to be transmitted by the scheduling entity 102. Sometimes an override indicator may be included. The override indicator is set to indicate that data already scheduled for transmission in a subframe is overridden by other data having a higher priority than that of data already scheduled for transmission in a subframe. May be done. The override indicator is set to indicate puncturing of the resource element in the data portion of the subframe to include other data that has a higher priority than that of the data already scheduled for transmission in the subframe. Good. For example, one of the pilot tones contains other data (e.g., MiCr data) that has a higher priority than the priority of data already scheduled (e.g., non-MiCr data) for transmission in a subframe. 6 may indicate at least one puncturing of resource elements in the data portion of the subframe shown in FIG. By providing such an indication to the subordinate entity 104, the subordinate entity 104 is informed that resource elements already scheduled for data having a relatively low priority are currently included in a relatively short TTI and have a relatively high priority. You are notified that you have been "removed" or overridden by data that has a degree.

  In some cases, the punctured resource element may be configured to indicate the QoS level and/or TTI duration of data with a relatively high priority. In some cases, puncturing increases the number of resource elements used for the override indicator, thereby increasing the number of resources to improve the reliability with which the override indicator is successfully received and processed by the subordinate entity 104. It may be performed throughout the block. In some cases, resource elements carrying indicator information may be converted to pilot tones after QoS level bit payload detection to improve channel estimation.

FIG. 7 is a diagram 700 illustrating an example of MU-MIMO transmission according to an aspect of the present disclosure. For example, scheduling entity 102 may send such MU-MIMO transmission information to two (or more than two) of dependent entities 104. In general, MU-MIMO transmission refers to the simultaneous transmission of two (or more) information streams, where each stream is destined (e.g., targeted) to a different receiver (e.g., user). ). (Unlike MU-MIMO, single-user multiple-input multiple-output (SU-MIMO) transmission refers to the transmission of several streams to a single receiver at a single time.) For example, referring to FIG. As can be seen, Stream ₁ may be a stream of information destined for (eg, targeted to) a _first subordinate entity 104 (eg, SUB ₁ ), and Stream ₂ may be a second subordinate entity 104. It may be a stream of information destined for (eg, SUB ₂ ) (eg, targeted). Although the example shown in FIG. 7 shows four streams destined for (e.g., targeted at) four different receivers, one of ordinary skill in the art will appreciate that streams and/or other dependent entities may be It will be appreciated that various variations or numbers of may be implemented.

Each stream (eg, Stream _{1 to} Stream ₄ ) may include one or more subframes, such as the subframes described in more detail above with reference to FIGS. 5 and 6. Each dependent entity (e.g., up to SUB ₁ ~SUB ₄₎ all streams (e.g., up to Stream ₁ ~Stream ₄₎ there is a case of receiving, of those subordinate entities (e.g., up to SUB ₁ ~SUB ₄₎ Each utilizes specific information (e.g., specific information in a header (not shown)) to determine which stream is destined (e.g., targeted) to that particular subordinate entity 104. May be. For example, SUB ₁ may utilize such header information (not shown) to determine that Stream ₁ is destined (eg, targeted) to a particular subordinate entity 104. Each subordinate entity 104 (eg, SUB _{1 to} SUB ₄ ) may, after making such a determination, demodulate a stream destined for (eg, targeted to) that subordinate entity 104.

In some cases, the subordinate entity 104 (e.g., SUB ₁ ) may know modulation information about streams (e.g., Stream _{2 to} Stream ₄ ) that are not destined for that subordinate entity 104 (e.g., SUB ₁ ). There are things I want. Knowing the modulation information for streams (e.g. Stream _{2 to} Stream ₄ ) that are not destined for the subordinate entity 104 (e.g. SUB ₁ ), the subordinate entity 104 (e.g. SUB ₁ ) will be better able to MU-MIMO. It may actually help to perform demodulation. Some existing devices may determine such modulation information "blindly", i.e., such information may not be clearly known to the device, for example, It may be performed using trial and error. Compared to such existing systems, aspects of the disclosure may include a modulation indicator when a subframe is included in an MU-MIMO transmission (e.g., above with reference to FIGS. 5 and 6). A control channel (described in more detail). Those skilled in the art will appreciate that the term "modulation indicator" (as used herein) encompasses various alternative terms without departing from the scope of this disclosure. Such alternative terms include modulation classification assistance, modulation classification, modulation assistance, modulation information, and/or various other suitable terms.

The modulation indicator may be set to indicate information corresponding to the modulation of another device (eg, another UE) included in the MU-MIMO transmission. For example, as can be seen with reference to FIG. 7, Stream ₁ may include a subframe that includes a control channel with a modulation indicator, which modulation indicator presents information about the modulation order of the subframes included in Stream _2. .. Even though the modulation indicator presents information about the modulation order of the subframes contained in Stream ₂ (for example, a stream that does not target/subject SUB ₁ ), SUB ₁ utilizes such a modulation indicator. A subframe included in Stream ₁ (for example, a stream having SUB ₁ as a destination/target) may be demodulated. In some cases, the modulation indicator may be included in one or more of the pilot tones described above with reference to FIG. 6 (eg, may be embedded within the pilot tones). In such an example, the pilot tones may be scrambled using known modulation information. Since pilot tones may be scrambled using known modulation information, dependent entities 104 (e.g., SUB _{1 to} SUB ₄ ) may determine modulation information based on the scrambling of pilot tones. There is. After modulation order detection, the pilot tones may be scrambled to allow estimation of the pilot channel.

FIG. 8 is a drawing 800 illustrating an example of various methods and/or processes that may be performed by scheduling entity 102 in accordance with aspects of the present disclosure. In some cases, at block 802, the scheduling entity 102 may determine the priority of already scheduled data for transmission in subframes. For example, as can be seen with reference to FIG. 5, the scheduling entity 102 may determine the priority of data scheduled for transmission already during the long TTI from time T ₀ to time T ₈ . At block 804, the scheduling entity 102 may determine whether other data that is ready to be transmitted has a higher priority than that of the data already scheduled for transmission in the subframe. For example, as can be seen with reference to FIG. 5, the scheduling entity 102 is ready to send any other data (e.g., MiCr data) that corresponds to a relatively short TTI (and thus has a relatively high priority). You may judge whether it was prepared. If ready for transmission, at block 806 the scheduling entity 102 transmits a subframe including a data portion and a control channel at least partially embedded within the data portion, utilizing the OFDM air interface. Good. The control channel may include an override indicator when other data ready to be transmitted has a higher priority than that of the data already scheduled for transmission in the subframe. In some configurations, the override indicator is overridden by other data whose data already scheduled for transmission in the subframe has a higher priority than that of data already scheduled for transmission in the subframe. May be set to indicate that. In some configurations, the override indicator indicates puncturing of resource elements in the data portion of the subframe to include other data that has a higher priority than that of the data already scheduled for transmission in the subframe. It may be set as shown.

In some other examples, at block 806, the scheduling entity 102 may determine if the subframe is included in an MU-MIMO transmission. For example, the scheduling entity 102 may determine whether a subframe is included in any _{one of} streams (for example, Stream _{1 to} Stream ₄ ) in the MU-MIMO transmission illustrated in FIG. 7. At block 804, the scheduling entity 102 may utilize the OFDM air interface to transmit a subframe including a data portion and a control channel at least partially embedded within the data portion. The control channel may include a modulation indicator when the subframe is included in an MU-MIMO transmission. The modulation indicator may be set to indicate information corresponding to the modulation of another device (eg, another UE) included in the MU-MIMO transmission. For example, as can be seen with reference to FIG. 7, for example, Stream ₁ may include a subframe including a control channel having a modulation indicator, the modulation indicator providing information about the modulation order of the subframes included in Stream _2. Present. In some configurations, this modulation indicator may be included in one or more of the pilot tones described above with reference to FIG.

  The methods and/or processes described above with reference to FIG. 8 are presented for purposes of illustration and are not intended to limit the scope of the present disclosure. The method and/or process described with reference to FIG. 8 may be performed in a different sequence than the method and/or process shown in FIG. 8 without departing from the scope of this disclosure. Arbitrary blocks are shown in dashed lines. Moreover, some or all of the methods and/or processes described with reference to FIG. 8 may be performed individually and/or collectively without departing from the scope of this disclosure. It is to be understood that the specific order or hierarchy of steps in the methods and/or processes disclosed is exemplary of the exemplary methods and/or processes. It should be appreciated that the specific order or hierarchy of steps in these methods and/or processes may be rearranged based on design preferences. In the appended claims, elements of various steps may be presented in an exemplary order, and are not meant to be limited to the specific order or hierarchy presented unless explicitly stated.

  FIG. 9 is a drawing 900 illustrating an example of various methods and/or processes that may be performed by a dependent entity 104, according to aspects of this disclosure. At block 902, the dependent entity 104 may utilize the OFDM air interface to receive a subframe that includes a data portion and a control channel at least partially embedded within the data portion.

  When other data ready to send (e.g. MiCr data) has a higher priority than the data already scheduled for transmission in a subframe (e.g. non-MiCr data), the control channel is An override indicator may be included. In some configurations, the override indicator has a higher priority for data already scheduled for transmission in a subframe (eg, non-MiCr data) than for data already scheduled for transmission in a subframe. Set to indicate that it is overridden by other data (eg, MiCr data). In some other configurations, the override indicator provides other data (e.g., MiCr data) with a higher priority than that of data already scheduled (e.g., non-MiCr data) for transmission in a subframe. It is set to indicate puncturing of resource elements in the data portion of the subframe for inclusion. In a configuration where the control channel includes an override indicator, at block 904, the dependent entity 104 receives other data with higher priority (e.g., MiCr data) rather than the already scheduled data (e.g., non-MiCr data). You may receive it.

The control channel may include a modulation indicator when the subframe is included in an MU-MIMO transmission. The modulation indicator may be set to indicate information corresponding to the modulation of another device (eg, another UE) included in the MU-MIMO transmission. In configurations where the control channel includes a modulation indicator, at block 906, the subordinate entity 104 causes the subframe of data intended for the device to cooperate with other devices scheduled in the same subframe using the modulation indicator. You may demodulate with. For example, as seen with reference to FIG. 7, SUB ₁ is, Stream ₂ (e.g., the stream not to SUB ₁ destined / target) Stream ₁ (e.g., using a modulation indicator included in the control channel, the SUB ₁ Subframes included in the destination/target stream) may be demodulated.

  The methods and/or processes described above with reference to FIG. 9 are presented for purposes of illustration and are not intended to limit the scope of the present disclosure. The method and/or process described with reference to FIG. 9 may be performed in a different sequence than the method and/or process shown in FIG. 9 without departing from the scope of this disclosure. Optional blocks are shown within dashed lines. Moreover, some or all of the methods and/or processes described with reference to FIG. 9 may be performed individually and/or collectively without departing from the scope of this disclosure. It is to be understood that the specific order or hierarchy of steps in the methods and/or processes disclosed is exemplary of the exemplary methods and/or processes. It should be appreciated that the specific order or hierarchy of steps in these methods and/or processes may be rearranged based on design preferences. In the appended claims, elements of various steps may be presented in an exemplary order, and are not meant to be limited to the specific order or hierarchy presented unless explicitly stated.

  Any one or more of the components, steps, features and/or functions described herein and/or illustrated in any one or more of the drawings may be a single component, step. , May be reconfigured and/or combined into features or functions, or may be embodied in several components, steps or functions. Additional elements, components, steps and/or features may be added without departing from the novel features disclosed herein. The apparatus, devices, and/or components described herein and/or illustrated in the figures illustrated in any one or more of the drawings may include any of the methods, features, or steps described herein. It may be configured to perform one or more. Also, the novel algorithms described herein may be implemented in software and/or embedded in hardware. As those skilled in the art will readily appreciate, the various aspects described throughout this disclosure may be extended to any suitable telecommunications system, network architecture, and communication standard. The actual telecommunications standard, network architecture, and/or communication standard used will depend on the specific application and the overall design constraints imposed on the system.

  Within the present disclosure, the word "exemplary" is used to mean "serving as an example, instance, or illustration." Any implementation or aspect described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other aspects of the disclosure. Similarly, the term "aspect" does not require that all aspects of the present disclosure include the discussed feature, advantage, or mode of operation. The term "coupled" is used herein to refer to a direct or indirect bond between two objects. For example, if object A physically contacts object B and object B contacts object C, then objects A and C are still coupled to each other, even if they do not physically contact each other directly. Can be considered. For example, the first die may be bonded to the second die even though the first die is not in direct physical contact with the second die in the package. The terms "circuit" and "circuitry" are used broadly to allow the functions described in this disclosure to be performed when connected and configured without limitation as to the type of electronic circuit. It is intended to include both hardware implementations of electrical devices and conductors, as well as software implementations of information and instructions that, when executed by a processor, enable it to perform the functions described in this disclosure.

  The above description is presented to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the scope of the claims should not be limited to the embodiments set forth herein, but should be given the maximum range consistent with the wording of the claims, and references to singular elements , "Only" is intended to mean "one or more" rather than "only" unless explicitly stated otherwise. Unless otherwise specified, the term "some" refers to one or more. A phrase that refers to "at least one" of a list of items refers to any combination of those items that includes a single member. By way of example, "at least one of a, b, or c" shall include a; b; c; a and b; a and c; b and c; and a, b, and c. .. All structural and functional equivalents to elements of various aspects set forth throughout this disclosure that are well known to, or will later become known to, those of skill in the art are expressly incorporated herein by reference. It is intended to be incorporated and covered by the claims. Furthermore, the disclosure herein is not intended to be made public, regardless of whether such disclosure is explicitly recited in the claims. No element in the claim is used unless the element is explicitly listed using the phrase "means for" or in the case of a method claim. Unless otherwise listed, it should not be construed under the provisions of 35 U.S.C. 112(f).

102 Scheduling entity
104 dependent entity
106 Downlink data
108 Downlink control
110 Uplink data
112 Uplink control
204 processor
206 computer-readable media
208 bus interface
210 transceiver
212 User Interface
214 memory
216 bus
220 Transmission circuit
221 Override circuit
222 MU-MIMO circuit
223 Other circuits
230 priority data
231 Modulation data
240 Send instruction
241 Override instruction
242 MU-MIMO instruction
243 Other orders
304 processor
306 Computer-readable media
308 bus interface
310 transceiver
312 User Interface
314 memory
316 bus
320 Receiver circuit
321 Override circuit
322 Demodulation circuit
323 Other circuits
330 Priority data
331 Modulation data
340 Receive command
341 Override instruction
342 Demodulation instruction
343 Other orders
416 TX Processor
420 antenna
452 antenna
456 RX processor
458 channel estimator
459 Controller/processor
460 memory
462 data sink
467 Data Source
468 TX processor
470 RX Processor
474 channel estimator
475 controller/processor
476 memory

Claims (14)

A method of wireless communication,
Determining the priority of data already scheduled for transmission in subframes,
Determining whether other data ready to be transmitted has a higher priority than the priority of the data already scheduled for transmission in the subframe,
Using the air interface, including a data portion, the <br/> the step of transmitting a sub-frame including at least partially embedded control channel to the data portion,
Wherein the control channel further look including the override indicator when the other data that are ready to be transmitted having a higher than the priority the priority of the data that has already been scheduled for transmission in the subframe,
The override indicator is a puncture of a resource element in the data portion of the subframe to include other data having a higher priority than the priority of the data already scheduled for transmission in the subframe. A method set to show charing .   The method of claim 1, wherein the control channel comprises one or more pilot tones embedded at least partially within the data portion of the subframe.   The control channel differs from scheduling information transmitted prior to the transmission of the subframe, the scheduling information configured to schedule data for resource elements in the data portion of the subframe, The method of claim 1.   The override indicator is overridden by other data in which the data already scheduled for transmission in the subframe has a higher priority than the priority of the data already scheduled for transmission in the subframe. The method according to claim 1, wherein the method is set to indicate that. Further comprising the step of determining whether the subframe is included in a multi-user multiple input multiple output (MU-MIMO) transmission,
The method of claim 1, wherein the control channel further comprises a modulation indicator when the subframe is included in the MU-MIMO transmission. 6. The method of claim 5 , wherein the modulation indicator is set to indicate information corresponding to modulation of another device included in the MU-MIMO transmission. An apparatus for wireless communication, configured to carry out the method according to any one of claims 1 to 6 . A method of wireless communication,
Utilizing the air interface to receive a subframe including a data portion and a control channel at least partially embedded within the data portion,
The control channel indicates that data already scheduled for transmission in the subframe is overridden by other data having a higher priority than that of data already scheduled for transmission in the subframe. look including an override indicator that is configured, the override indicator for transmission in the subframe, to include other data having a higher priority than the priority of the data that has already been scheduled, the subframe Configured to indicate puncturing of resource elements in said data portion of
Method comprising the <br/> the step of receiving the other data having a higher priority than the in lieu of data to which the already scheduled. 9. The method of claim 8 , wherein the control channel comprises one or more pilot tones at least partially embedded within the data portion of the subframe. The control channel is different from scheduling information transmitted prior to transmission of the subframe, the scheduling information configured to schedule data for resource elements in the data portion of the subframe. The method according to item 8 . The method is
9. The method of claim 8 , further comprising receiving the other data having the higher priority in place of the already scheduled data. The control channel includes a modulation indicator when the subframe is included in a multi-user multi-input multi-output (MU-MIMO) transmission, the modulation indicator to a modulation of another device included in the MU-MIMO transmission. Set to show the corresponding information,
It said method said subframe data intended for the device, using the modulation indicator, further comprising the step of demodulating with other devices cooperate with scheduled in the same subframe to claim 8 The method described. An apparatus for wireless communication, configured to carry out the method according to any one of claims 8 to 12 . A computer program comprising instructions for performing the method according to any one of claims 1 to 6 and claims 8 12.